A conceptual theoretical framework to integrally assess the possible impacts of climate change on domestic irrigation water use

Southern Africa is likely to experience higher evapotranspiration and altered rainfall characteristics due to global warming and climate change. Climate-driven water use may potentially stress water supply facilities due to increased demand and reduced surface water yield. This paper presents a conc...

Full description

Saved in:
Bibliographic Details
Published in:Water S. A. Vol. 41; no. 5; pp. 586 - 593
Main Authors: Makwiza, Chikondi, Jacobs, Heinz Erasmus, Fuamba, Musandji, Houssa, Fadoua
Format: Journal Article
Language:English
Published: Gezina Water Research Commission (WRC) 01.10.2015
Water Research Commission
Subjects:
Climate
Climate change
Climatic changes
Climatic conditions
Demand
Domestic
End-use model
Environmental aspects
Environmental impact
Environmental impact analysis
Evapotranspiration
Global climate
Global warming
Impact analysis
Irrigation
Irrigation water
Irrigation water use
Mathematical analysis
Mathematical models
Methods
Moisture content
Outdoor water use
Soil water
Surface water
Water balance
Water demand
Water in agriculture
Water supply
Water use
Water yield
Water-supply, Agricultural
South Africa
Africa
ISSN:0378-4738, 1816-7950, 0378-4738
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Southern Africa is likely to experience higher evapotranspiration and altered rainfall characteristics due to global warming and climate change. Climate-driven water use may potentially stress water supply facilities due to increased demand and reduced surface water yield. This paper presents a conceptual theoretical framework for assessing impacts of climate change on domestic irrigation water use. The prediction of climatic conditions that may potentially influence future water use is reviewed together with regional capacity for downscaling global climate projections. The impact assessment of water use is based on the modification and adaptation of an existing end-use model for water demand to include parameters for climate change. The Penman-Monteith equation and the soil water balance equation are incorporated for the estimation of daily water needs of vegetated areas in residential properties. The paper also discusses data requirements and a calibration procedure to improve model fit to the observed domestic irrigation water use. The proposed approach could form a basis for constructing a detailed model for planning various adaption measures relating to climate-driven domestic irrigation water use.
Bibliography:SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
ObjectType-Article-1
ObjectType-Feature-2
content type line 23
ISSN:0378-4738
1816-7950
0378-4738
DOI:10.4314/wsa.v41i5.01